Electromagnetic valve



A. M. OLSEN.

ELECTROMAGNETIC VALVE.

APPLICATION FILED JULY I0, 1919. v

Patenteaon25,1921

Q ZV/ fa Mirow .W/

A. M. OLSEN.

ELECTROMAGNETIC VALVE.

APPLICATION r1LEDJuLY1o.1919.

Patented 00L. 25, 1921.

3 SHEETS-SHEET 2.

A. M. OLSEN.

ELECTROMAGNETIC lVALVE. APPLICATION FILED JULY 10. '1919.

Patented Oct. 25, 1921.

3 suussum a.

UNITED sTATEs PATENT oFFIcE.

i AXEL M'.V OLSEN, O EAST ORANGE, NEW JERSEY.

ELECTROMAGNETC VALVE.

Application led July 10,

To aZZ whom t may concern:

VBe it known that l, AXEL M. OLSEN, a subject of the King of Norway, residing at East Orange, inthe county of Essex and State of New Jersey, have invented certain new and useful improvements in Electromagnetic Valves; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates ygenerally to valves and more particularly to certain new and useful improvements in electro-magnetically operated valves.

The principal object of the invention is to provide improved means for operating the valve from a point remote from the valve, said means including mechanism for opening the valve, mechanism for holding the valve in open position, and'mechansm for releasing the valve holding means and permitting the valve to close. The invention may be used for various purposes, but is particularly ap plicable for useV in connection with temperature or iuid pressure indicators or gages to automatically close the valve when the desired temperatureV or pressure has been reached. l

Another object ofthe invention is to provide a device of this class, which will be comparatively simple, strong, durable andl inexpensive in'construction, eiicient and reliable' in operation,'and well adapted vto the purpose for which it is desired' p Vith these and other objects in view, the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be hereinafter fully described and claimed.

In the accompanying drawings in which similar reference characters designatel like parts throughout the several views,

Figure 1 is a vertical sectional view through a valveconstructed in accordance with this invention', showing it in closed position and vshowing it used in connection with a pressure gage.v

Fig. 2 `is a similar view showing the' valve in open position. l

Fig. 3 is a front elevation of a duid pres sure indicator or gage in connection with which the valve is used, and

Fig. 4 is a diagrammatic view illustrating the electric circuits involved.

` Referring more .particularly to the draw- Spccication of Letters Patent.

1919. Serial No. 309,934.V

ings, the numeral 1 designates a casing of cylindrical construction and having its ends internally threadedv to provide for the connection therewith of heads 2 and 3. The upper head 2 has a centrally located threaded opening 4 therein, and screwed into this opening is a Vplug 5,"the Vlatter being con-y nected at its upper end to an inlet fluid pressure pipe 6 and having therein a valve seat 7 upon which rests a valve 8 to control the passage of the fluid from the pipe 6 to the interior of the casing 1. The head 2 is also provided with diametrically dis posed threaded openings 9- and 10 which the central portion of which is hollow and provided with a suitable lining 16 of non# magnetic material. The magnet 15 controls a core 17 of magnetic material such as iron. Thiscore 17 is slidable within the'lining 1,6 and has its upper end connected to the valve 8 by means of a stem 18. The lower end 0f the core 17 is reduced as at/19f for a purpose to be 1 hereinafter described and when the valve 8 is in closed position, it projects below the plane of the lower end of the magnet.

Mounted in any convenient manner in the lower end of the casing 1 is;an additional electro-magnet 20 constructed similar to the Patented oet. 25 1921. f

magnet 1,5 and having a brass lining 21 in l end of the magnet 20. The core 17 of the magnet 15 is larger and heavier than the core 22 of the magnet 20 and when the valve 8 is in closed position it rests upon the lever 24 so as to hold the core 22 in raisedl position. li owever when the magnet 154` is energized so as to throw the core 17 upwardly, the core 22 will drop to its lowermost position under its own weight and consequently pull the lever 24.

The lever 24 is provided at one of its ends with a spring pressed contact 27 which engages with either of two contact plates 28 and y29 as the lever moves from one position toanother. rlfhese contact plates 28 and 29 are ixedly mounted in any suitable manner within the casing 1 and are curved around the axis of the lever 24 for an ob vious purpose.

The fluid pressure pipe 14 is provided with jsuitablepipe fittings 30 by which a fluid pressure indicator or gagev31 is connected. This gage has a commutator 32 mounted upon the axis of its indicating pointer 33 so as vto rotate as the pointer moves across the dial. The commutator 32 is provided with a s. conducting segment 34 and a non-conducting Y positionshown in Fig.l 1V of the drawings,`

segment 35, thelatter comprising the major portion of the commutator.

, Pivoted to 'a bracket 36 attached to the casing` of the gage is aV manually movable `hand 37 which is adapted to'be moved over the base of the dial and to beset at the va-l ed by a conductor 42 to the arm 25, said conductor 42 passing through the plug 11 in the upper head 2 of the casing l. The` contact or brush 38 is connected by a conductor 43 toV one terminal ofthe magnet 15,1the other terminal of which'is electrically connected with the contact28 by means of'a short length of wire '44. The other brush or contact`39 is connected by a wire 45 to one terminal Vof the magnet 20 which has its other terminal connected to the contact 29 by a'short wire46. yThe wire 45 has disf posed within its length an electric bell or other suitable alarm-device 47.

Assuming that the indicating'pointers 33 and V37 of the gage are at Zero vand the brushes 38 and 39 therefore'engaging the portions 34 and 35 respectively7 of the commutator, and also assuming that the mechanism disposed within the casing 1 is in the and it is desired to open the valve 8 to allow the fluid in the pipe 6 to pass into the pipe 14 and from there to some suitable article such as an automobile tire, the hand 37 is first moved across the dial to the position corresponding to the Vdesired pressure. As soon as this is done the brush 38 will engage the conducting position 34 of the commutator by closing the circuit through the magnet 15 and throwing the core 17 up wardly. The valve 8 being connected with the core 17 f by the stem 18 obviously is opened and the lower end 19 of the core is moved'so as to allow lever 24 to swing downwardly under the weight of the core 22. As the lever 24 swings downwardly the Contact 27 moves out of engagement with the contact 28 breaking the circuit through the magnet 15, and moves into engagement with the contact 29. When the pressure in the pipe 14 reaches the desired amount the indicating pointer 33 will be disposed beneath the hand 37 and the moment this takes place the brush 39 will come into engagement with the segment 34 of the commutator and complete the circuit through the magnet 20. rIhe magnet 20 being thus energized will draw its core 22 upwardly and actuate lever 24V so as to allow the core 17 to drop to close the valve 8. When the circuit through the magnet 2O islenergized, the bell 47 will obviously operate to sound the alarm as to the condition of the apparatus.

From the foregoing description, taken in connection with the accompanying drawings, the construction, use and operation of the device will be readily understood.

Various changes in the form, proportion, and in the minor details of construction may be resorted to without departing from the spirit of the invention as defined in the.

claims. For instance, the valve and casing may be so connected and constructedl that none of the fluid passing through the valve will enter the casing. Hence, when the valve is placed in a steam line,zthe magnets will not be destroyed.

I claim- Y .Y

1. In an apparatus of the class described, the combination of a valve, a magnet for openingasaid valve, a magnet for closing said valve, electric circuits for said magnets, a fluid pressure indicator having a dial and Va pointer actuating over the same, a manually movable hand also actuating over said dial and adapted to beset at the variousl positions thereon, a contact carried by said pointer and included in both of said circuits, and a pair of additional contacts po-V sitioned for engagement with the iirstfmentioned contact, one of said vadditional contacts'being disposed in one of said circuits and the other being disposed in the other circuit.

2. In an apparatus of the class described, the combination of a valve, a magnet for opening said valve, a magnet for 'closing said valve, electric circuits for said magnets, a fluid pressure indicator having adial and a pointer actuating over the same, a manually movable pivoted hand also actuating over said dial and adapted to be set atl the various positions thereon, a v commutator mounted upon the axis of said vpointer and having a non-conducting segment and a conducting segment, the latter being included. in both of said circuits, and a pair of brushes mounted upon said hand on opposite sides of the pivot thereof and positioned for engagement with said commutator, one of said brushes being disposed in one of said circuits and the other being disposed in the other circuit.

3. A device of the class described comprising a casing having a valve seat therein, a valve disposed in said seat, a lever fulcrumed intermediate of its ends in said casing, a magnetic core suspended from said valve and resting upon one end of said lever, a second magnetic core suspended from the other end of said lever, a magnet for raising the first core to open said valve and permitting the second core to drop and rock said lever into locking engagement with the first core, a second electro-magnet for raising the second core and rocking said lever out of locking engagement with the irst core to permit the latter to drop and close said valve, electric circuits for said magnets, immovable switch members mounted in said casing and included in said circuits, and a coacting switch member carried by said lever for breaking the circuits through said magnets upon the actuation of said lever.

4. A device of the class described comprising a casing having a fluid inlet and a fluid outlet, a valve controlling passage of iluid through the inlet, an electro-magnet in said casing having a core constituting weight means for holding said valve in a closed position, a second electro-magnet in said casing, a support, a lever pivoted intermediate its length to said support between said magnets and having the core of the second magnet suspended from one end portion to normally retain the lever in set position with its second end portion supporting the core of the first magnet in a raised position with the valve open, the second magnet when energized moving said lever out of locking engagement with the rst core to permit the latter to drop and close said valve and engage the lever to lock the lever in the adjusted position with the core of the second magnet raised, electric circuits for said magnets, removable switch members mounted in said casing and included in said circuits, and a co-acting switch member carried by said lever for breaking the circuits through said magnet upon movement of said lever.

' In testimony whereof I have hereunto set my hand.

AXEL M. oLsEN. n 

